{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "839400815",
    "entityType": "User",
    "nonce": "0xeb9caab8d92daba3ddc0fce25560b70e70f7ae183fbba0940e23827b21a59633",
    "signature": "0x9c0ef6c61fa7443ae954c9bd01872447271a679b4032496db35233e95e5b53962320dcd2f094ac9803fa74642e3aae6bf7403d1457e78804e428df3302066adc1c",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}